Selecting fungal disturbance indicators to compare forest soil profile re-construction regimes

Sukdeo, Nicole; Teen, Ewing; Rutherford, P. Michael; Massicotte, Hugues B.; Egger, Keith N.

doi:10.1016/j.ecolind.2017.09.021

Cited by 10 publications

(11 citation statements)

References 67 publications

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“…Indeed, previous studies suggest that communities of arbuscular mycorrhizal fungi (AMF) are structured by soil properties [16,19,61]. Ordination of soil characteristics (mainly pH, silt, and sand) improved the predictions of AMF abundance but was not a significant contributor [62].…”

Section: Main Characteristics Of Microhabitat-microbial Interactions mentioning

confidence: 97%

“…Soil microorganisms can be affected by N deposition and features of the soil microhabitat, such as pH [13][14][15], bulk density and water-holding capacity [16,17], particulate size [18,19], and aggregate stability [20,21]. However, alterations in the composition of soil microbial communities due to changes in pH and particle size as a result of N deposition are not well understood despite the importance of microbial communities in the N cycle [15,22,23].…”

Section: Introductionmentioning

confidence: 99%

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Variations in the Compositions of Soil Bacterial and Fungal Communities Due to Microhabitat Effects Induced by Simulated Nitrogen Deposition of a Bamboo Forest in Wetland

Huang²,

Ekawati

et al. 2019

Forests

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Although numerous studies have been published on nitrogen (N) deposition, little is known about its impact on microbial communities in wetland forests. Here, we used simulated nitrogen deposition (SND) to analyze the importance of differences in soil microhabitats in promoting the diversity of soil bacteria and fungi. We compared various levels of SND (control (CK), low N (N30), medium N (N60), and high N (N90)) and found that these were associated with changes in soil microhabitats. Additionally, SND affected soil pH, clay and sand content of the soil, and specific surface area (SSA). Bacteria and fungi responded differently to increased SND levels. The alpha diversity of bacteria decreased with an increased SND level, while fungal abundance, diversity, and community evenness reached their maximum values at the N60 threshold. Principal coordinates analysis (PCoA), nonparametric multivariate analysis of variance (PERMANOVA), and linear discriminant analysis (LDA) coupled with effect size measurements (LefSe) also confirmed that the bacterial composition was different at N90 compared to other levels of SND while that of fungi was different at N60. A higher discriminant level (LDA score ≥4) may be a valuable index of selecting indicator microbial clades sensitive to SND for wetland management. Further, an increased pH was associated with a greater abundance of bacteria and fungi. In addition, the volume contents of clay and SSA were negatively correlated with bacteria but fungi are associated with soil specific gravity (SSG). Overall, in a neutral soil pH environment, pH fluctuation is the main influencing factor in terms of bacterial and fungal abundance and diversity. The diversity of fungi is more dependent on the type and relative content of solid phase components in soil than that of bacteria, implying the presence of species-specific niches for bacteria and fungi. These results demonstrate that changes in SND can induce short-term microbial and microhabitat changes.

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Section: Main Characteristics Of Microhabitat-microbial Interactions mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Variations in the Compositions of Soil Bacterial and Fungal Communities Due to Microhabitat Effects Induced by Simulated Nitrogen Deposition of a Bamboo Forest in Wetland

Huang²,

Ekawati

et al. 2019

Forests

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“…Soils at both sites were classified as Eluviated Dystric Brunisols within the Canadian System of Soil Classification (SCWG, 1998). Soil pit descriptions for these field sites are previously described in Sukdeo et al (2018). At each site, three replicate areas or blocks were selected with a minimum distance of 10 m between them, so each block could accommodate four 1 m x 2 m rectangular plots.…”

Section: Site Description Experimental Design and Sample Collectionmentioning

confidence: 99%

“…5 months post-disturbance), when the LFH stockpile was placed back on the plot. The relevance of each disturbance regime to soil reclamation practices, details of soil sampling, and soil storage is summarized in Sukdeo et al 2018.…”

Section: Site Description Experimental Design and Sample Collectionmentioning

confidence: 99%

“…The copyright holder for this preprint (which was this version posted February 18, 2018. ; https://doi.org/10.1101/266684 doi: bioRxiv preprint strategies. While disruptions of EcM fungi in disturbed forests are consistently identifiable through ITS2 sequencing surveys of bulk LFH and mineral soils, (Kyaschenko et al, 2017;Stursová et al, 2014;Sukdeo et al, 2018;Sun et al, 2015) disturbance responses of bacteria are more variable (Bastida et al, 2017;Hartmann et al, 2012;.…”

Section: Introductionmentioning

confidence: 99%

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